/* SPDX-License-Identifier: GPL-2.0 */
/* Machine-dependent software floating-point definitions.
 * sw64 kernel version.
 * Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
 * This file is part of the GNU C Library.
 * Contributed by Richard Henderson (rth@cygnus.com),
 *		  Jakub Jelinek (jakub@redhat.com) and
 *		  David S. Miller (davem@redhat.com).
 */

#ifndef _ASM_SW64_SFP_MACHINE_H
#define _ASM_SW64_SFP_MACHINE_H

#define _FP_W_TYPE_SIZE		64
#define _FP_W_TYPE		unsigned long
#define _FP_WS_TYPE		signed long
#define _FP_I_TYPE		long

#define _FP_MUL_MEAT_S(R, X, Y) \
	_FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S, R, X, Y)
#define _FP_MUL_MEAT_D(R, X, Y) \
	_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
#define _FP_MUL_MEAT_Q(R, X, Y) \
	_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)

#define _FP_DIV_MEAT_S(R, X, Y)	_FP_DIV_MEAT_1_imm(S, R, X, Y, _FP_DIV_HELP_imm)
#define _FP_DIV_MEAT_D(R, X, Y)	_FP_DIV_MEAT_1_udiv(D, R, X, Y)
#define _FP_DIV_MEAT_Q(R, X, Y)	_FP_DIV_MEAT_2_udiv(Q, R, X, Y)

#define _FP_NANFRAC_S		_FP_QNANBIT_S
#define _FP_NANFRAC_D		_FP_QNANBIT_D
#define _FP_NANFRAC_Q		_FP_QNANBIT_Q
#define _FP_NANSIGN_S		1
#define _FP_NANSIGN_D		1
#define _FP_NANSIGN_Q		1

#define _FP_KEEPNANFRACP	1

/* Sw_64 Architecture Handbook, 4.7.10.4 sais that
 * we should prefer any type of NaN in Fb, then Fa.
 */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
do {								\
	R##_s = Y##_s;						\
	_FP_FRAC_COPY_##wc(R, X);				\
	R##_c = FP_CLS_NAN;					\
} while (0)

/* Obtain the current rounding mode. */
#define FP_ROUNDMODE	mode
#define FP_RND_NEAREST	(FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT)
#define FP_RND_ZERO	(FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT)
#define FP_RND_PINF	(FPCR_DYN_PLUS >> FPCR_DYN_SHIFT)
#define FP_RND_MINF	(FPCR_DYN_MINUS >> FPCR_DYN_SHIFT)

/* Exception flags. */
#define FP_EX_INVALID		IEEE_TRAP_ENABLE_INV
#define FP_EX_OVERFLOW		IEEE_TRAP_ENABLE_OVF
#define FP_EX_UNDERFLOW		IEEE_TRAP_ENABLE_UNF
#define FP_EX_DIVZERO		IEEE_TRAP_ENABLE_DZE
#define FP_EX_INEXACT		IEEE_TRAP_ENABLE_INE
#define FP_EX_DENORM		IEEE_TRAP_ENABLE_DNO
#define FP_EX_OVERINT		IEEE_TRAP_ENABLE_OVI

#if defined(CONFIG_SUBARCH_C3A) || defined(CONFIG_SUBARCH_C3B)
#define FP_DENORM_ZERO		(swcr & IEEE_MAP_DMZ)
#elif defined(CONFIG_SUBARCH_C4)
#define FP_DENORM_ZERO		1
#endif

/* We write the results always */
#define FP_INHIBIT_RESULTS 0

#endif /* _ASM_SW64_SFP_MACHINE_H */
